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The effects of MgO on rheological property of blast furnace slag of Baotou Steel are analyzed by preparing slag specimen with pure chemical reagent under N2 atmosphere based on the 4# blast furnace slag of Baotou Steel under laboratory conditions and crude fuel conditions of blast furnace ironmaking production of Baotou Steel. Moreover, the effects of MgO on melting property and enthalpy of blast furnace slag of Baotou Steel are also explored. The results showed that the MgO content of slag was increased from 8.00% to 13.00%, melting temperature of blast furnace slag of Baotou Steel was on the rise, viscosity and viscous flow activation energy showed a trend of first decreasing and then increasing, fluidity and thermal stability of slag became first good and then poor under experimental conditions. In addition, the characteristic temperature of melting property for blast furnace slag of Baotou Steel shows a trend of first decreasing and then increasing as well as enthalpy of slag shows a trend of increasing with the increase of MgO content of slags, which show that the heat storage capacity of slag in blast furnace hearth is enhanced. The MgO content of blast furnace slag of Baotou Steel is suggested to be controlled at 10.00% by comprehensively considering the experimental study results, relevant theoretical calculations and control level of MgO content of existing blast furnace slag of Baotou Steel.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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